CHEMISTRY HIGH SCHOOL

Isotopes of the same element have different ____.a. positions on the periodic table
c. atomic numbers
b. chemical behavior
d. mass numbers

Answers

Answer 1
Answer:

Answer:

d. mass numbers

Explanation:

Isotopes are atoms that have the same number of protons (atomic number) but different number of neutrons. As the definition of mass number is the sum of protons and neutron in an atom, the isotopes have different mass numbers.
Answer 2
Answer: The answe is D. Mass number

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Acetone is a common solvent and has a density of 0.7899 g/mL. What volume of acetone, in mL, has a mass of 29.3 g?

Answers

V (volume), M (mass), D (Density)
We get: M = 29.3, and D = 0.7899, And V = ? 
The formula to find the volume is: 
V = (M)/(D)
So we get:
V = (29.3)/(0.7899)
V = 37.09

So, the volume of acetone when it have a mass of 29.3 grams is about 37.09 milliliters

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Predict the organic product formed when phosgene reacts with an excess of methanol.

Answers

When phosgene is reacted with an excess of methanol, this produces dimethyl carbonate. Dimethyl carbonate is used in methylating anilines, phenols, and carboxylic acids, and is also being studied for its use as an alternative additive in fuel.

The industrial production of dimethyl carbonate no longer uses phosgene because of the latter's toxicity. Phosgene widely gained infamy when it was used in chemical warfare during WWI.

Which subatomic particle is not found in the nucleus of an atom

Answers

Only subatomic particle NOT found in the nucleus
 
would be Electrons

What kind of particles make up compound

Answers


compounds are composed of elements

elements are composed of sub atomic particles such as electrons and proton

A compound is made of of 2 or more elements. Elements are made up of atoms. So compounds are also made up of atoms because they are made up of elements.

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Define the acid rain for class 10 .???

Answers

Answer: Acid rain is caused by a chemical reaction that begins when compounds such as sulphur dioxide and oxides of nitrogen are released into the air. These substances can rise very high up into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants called acid rain.

Explanation:

Within a single molecule of water, two hydrogen bonds are bonded to a single oxygen atom by_______.However when there are multiple water molecules, the partial negative charge at one end of a water molecule attracted to the partial ositive charge of another water molecule forms ____________.

Answers

Answer:

covalent bonding, hydrogen bonding

Explanation:

The molecular formula of water is H_2O in which the two hydrogen atoms are connected to the oxygen atom via covalent bonds which means that the electrons are shared in the bond.

Hydrogen bonding is a special type of the dipole-dipole interaction and it occurs between hydrogen atom that is bonded to highly electronegative atom which is either fluorine, oxygen or nitrogen atom.

Partially positive end of the hydrogen atom is attracted to partially negative end of these atoms which is present in another molecule. It is strong force of attraction between the molecules.

Thus, when multiple water molecules are there, there are connected by hydrogen bonding.
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